Cleaning adapter



FIG. 1 is a left side perspective view of a cleaning adapter in accordance with the new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a bottom elevation view thereof;

FIG. 4 is a top elevation view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front view thereof.

The broken lines in FIGS. 1-4 and 6 are included for the purpose of illustrating a portion of the cleaning adapter that forms no part of the claimed design. 

CLAIM The ornamental design for a cleaning adapter, as shown and described. 